TABLE 1

Comparison of Extent of Suspected Relapse as Assessed Before and After PET

CSI extent of relapse*	PET extent of relapse*						% Less disease by PET	% Same status	% More disease by PET
CSI extent of relapse*	Neg	LR	LNR	ENR	SR	Total	% Less disease by PET	% Same status	% More disease by PET
Neg	2	0	0	0	0	2	0	100	0
LR	4	7	4	0	6	21	19	33	48
LNR	7	2	6	3	10	28	32	21	46
ENR	2	0	2	1	0	5	80	20	0
SR	3	1	0	0	3	7	57	43	0
Total	18	10	12	4	19	63	33	30	37

↵* Data are numbers of patients.
CSI = conventional restaging investigations; Neg = negative; LR = local relapse; LNR = localized nodal relapse; ENR = extensive nodal relapse; SR = systemic relapse.